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UNITED STATES EDWARD Z. COLLIN EEicE.

PATENT SEWER-INLET.

SPECIFICATION forming part of Letters Patent No. 274,466, dated March 27, 1883.

Application filed August 10, 1882.

To all whom it may concern Beit known that we, EDWARD Z. CoLLrNos, of Camdemin the county of Camden and State of New Jersey, and CHARLES F. PIKE, of

.Philadelphia, in the county of Philadelphia land State of Pennsylvania, have invented certain new and useful Improvements in Sewernlets, of which the following is a specification, reference being had therein to the accompanying drawings, wherein- Figure l is a transverse section of a sewer and inlet embodying our invention. Fig. 2 is a like view of inlet, illustrating the manner in which the running-water or fluid seal equalizes the hack-pressure in the sewer; and Fig. 3 is a similar view of a modified form of trap for the sewer-inlet.

Our invention has relation to sewer-inlets,

and has for its object to prevent sewer-gasin the sewer, which is produced by the rise of the tide in the sewers above the mouth or outlet of the sewers.

Our improved sewer-inlet is so constructed and arranged that such pressure in the sewers cannot exert sufficient force upon the sealing tluid or water in the trap to raise such water out of and unseal said trap to open apassageway through it and the inlet for the escape ofA the gas. On the contrary, our improved inlet is so arranged that the sealing iiuid or water in the trap always balances the pressure of the gas in the sewer, thereby preventing such pressure unsealing the trap. Gonsequentl y the sealing water or huid therefor always maintains itself in its normal posit-ion to effect the seal for the trap, and the latter is always closed or sealed and no sewer-gas escapes there- (No model.)

through to the inlet. Again, the supply of sealing-water for the traps of sewer-inlets is obtained or depends on the wastewater or rain ilowing thereinto from the gutters or other conveyors employed to conduct the drainage thereto. Such supply is not constant, but is intermittent only, at intervals of shorter or longer duration. Hence the water in the inlettrap soon becomes saturated with sewer-gas, 6o

and in such state it permits the gas to pass freely through the trap and escape from the inlet.

In our improved inlet the water-supply for the trap does not depend upon the drainage, 6 5

but has a fixed and positive source of supply, which is constantly flowing to the trap to form a running seal therefor. The water in the trap being thus continually renewed, it remains in a fresh condition. point of sewer-gas saturation. Consequently as fast as such gas seeks to pass through such water it is absorbed thereby and carried off to the sewer. The provision of such running seal, therefore, offers a complete bar to the passage of sewer-gas through the trap and inlet, and it constitutes the primary feature of our invention.

Our improvement further consists in the novelcombination, construction, and arrange- 8o ment of parts, as hereinafter specifically described and claimed.

Referring to the accompanying drawings, A represents a sewer, B the inlet, and C the connection or conduit between said parts. inlet B is ofthe usual or other appropriate and desired form, having a trap, b.

D represents a pipe designed und adapted to connect with the water-main, or a branch thereof, as shown at a', Fig. l, and, if desired, 9o

may he furnished with a cock or valve so arranged that a flow of water will always be passing through pipe D to form a continuouslyruiming seal for the trap of the inlet. Said pipe D may be connected to the inlet at d, as 95 shown in Fig. 1, or at d', as represented in Fig. 2, or itmay be connected thereto at any other 'suitable or desired point.

lThe operation is as follows: The water from pipe D, constantly tlowing into trap b, provides r: o

for a running-water seal therefor, so that said trap is always maintained in a sealed condi- Hence it never reaches its 7o The tion to bar the escape ofv sewer-gas therethrough. If at any time said trap should be siphoned,'the water from pipe yD soon seals and restores it to its normal state. When the mouth of the sewer A is closed by the rising ofthe tide in the river and the pressure of gas `in the sewer exerts a .force on the water in trap b to cause it to rise in the chamber B of v 'b therefore remains in its sealed condition, and

no sewer-gas can pass therethrough when subjected to pressure of gas in the sewer. Such action of the runningwater seal is illustrated in Fig. 2, wherein the arrow represents the sewer-gas exerting a pressure on the water in trap b, while water from the pipe D, flowing into chamber B', provides for the column of Huid in said chamber to form the necessary balance for such gas-pressure. Again, the water in trap b being constantly renewed, it remains in a comparatively freshened or pure conditionto permit it to absorb the gas or other odors contacting or co'mmingling therewith, and when so absorbed are carried tothe sewer by said water; hence the latter never reaches, its point of gas-saturation. It is apparent, therefore, thatour improved inlet is so constructed and arranged that no sewer-gas can pass therethrough, nor will such gas escape therein to even when there is considerable 'back-pressure of the same in the sewer.

The pipe D may be of any suitable bore, its size depending upon the volume of water designed to be passed to the trap b. If desired, said pipe maybe provided with a cock to regulate the supply of water passing to the inlet. So, too, if desired, a reservoir, E, for holding a disinfectant may be arranged in the path or 4line of said pipe, as shownv at x, Fig. 1, or a pocket, E', Fig. 1, may be secured to or formed on the inlet B, for .holding such disinfectant, and the pipe D' connected thereto, as shown, so that the water passing through said pipe will dissolve a portion Aof such disinfectant and carry it to the chamber B', trap-b, and sewer to disinfect said parts. We do not herein claim such disinfecting appliances, as we have made them the subject of a separate application of even date herewith.

Fig. 4 represents a modified form of trap for the inlet, having a circular cap or inverted cup arranged as shown.

1f desired, ascreen, F, (shown in Fig. 2,) may be employed to prevent any coarse particles of dirt, garbage, or other material passing to trap b to clog` the same.

NVhat we claim as our invention is' l. A sewer-inlet provided with a trap and a pipe leading to a water-main or other constant source of supply, whereby a continuous ow of water is passed to the trap of the inlet, as and for the purpose set forth.

2. In preventing the displacement of the sealing-water in sewer-inlet traps by the backpressure of sewer-gas, the method of providing a constantly-increasing hydrostatic pressure to oppose or balance the back-pressure of the gas in the sewer, which consists of conducting` into the trap a flow of water from a constant source of supply, substantially as set forth. .i

3. The combination, with in let B, having` trap b, of the pipe D, leading to a source of constant water-supply, substantially as and for the purpose set forth.

4. The combination, with inlet B, having partition-trap b and screen F, the pipe I), leading to a source of constant water-supply, substantiall y as and for the purpose set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

EDWARD z. ooLLINes. CHARLES F. PIKE.

Witnesses:

S. J'. VAN S'rAvoREN, GHAs. 11. VAN HORN. 

